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Image: calendertetris.com

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Tetris disguised as Google Calendar

A single HTML file in which falling pieces are meetings in a lookalike calendar, written entirely by Claude in one sitting.

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Credits

  • Reddit poster Pizza_love_triangle Source ↗

Earliest dated source: 24 Mar 2026

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Sources

From a short post by the maker, so the details are as they tell them.

  • Reddit: Built a fully playable Tetris game skinned as Google Calendar — entire thing made with Claude in oneForum threadreddit.com
    Reddit poster: Pizza_love_trianglePosted 24 Mar 2026

    If it disappears: archived copy of Reddit: Built a fully playable Tetris game skinned as Google Calendar — entire thing made with Claude in one (opens in a new tab)

  • The project: calendertetris.comBlog or write-upcalendertetris.com

    Linked in the post.

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Prompt & Solder

An independent community project. Not affiliated with Anthropic.

What this is. Real projects where people used Claude to build, fix, port, revive or take apart something, from jailbroken Kindles to rebuilt DOS games, plus the times it went badly wrong. Every build links to where it was shared, and every source is listed here.

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